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Finding the Fourth Proportional to 125,213.40, 187,820.10 and 105,773.40

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Solution

The fourth proportional to 125,213.40, 187,820.10 and 105,773.40 is: 158,660.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,213.40 : 187,820.10 = 105,773.40 : x
  2. Step 2: Convert to fraction form
    125,213.40/187,820.10 = 105,773.40/x
  3. Step 3: Cross multiply
    125,213.40x = 187,820.10 × 105,773.40
  4. Step 4: Simplify right side
    125,213.40x = 19,866,370,565.34
  5. Step 5: Solve for x
    x = 19,866,370,565.34/125,213.40
  6. Step 6: Final answer
    x = 158,660.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.